I have just finished my first Glovebox liner and I am now offering them for sale.
$50 gets you a glovebox liner in practically any colour you want (that is available in the vinyl range), the liner is made from 3mm compressed foam as used in signwriting applications. Does not rot, is water resistant and will not warp in normal operating conditions.
Once installed it has a very solid feel to it.
They can be easily modified for "headunit in glovebox" installations too.
I can also supply them "blank" for $40 but I am not sure whether paint can be used, flocking is another option, the white does mark easily though.